HESSAIRE MC18M Portable Evaporative Cooler ? Color May Vary, 1300 CFM, Cools 500 Square Feet , White Evaporative cooling fans are designed to pull hot, dry air through a water-soaked media filter using a water pump and fan. As the water evaporates into the air, the air's temperature will lower. They are optimal when used in hot, dry climates used to filter ambient air while increasing the condensation and delivering cool airflow. Evaporative cooling fans do not use refrigerants to remove heat like an air conditioner, so they are less effective in high humidity areas. Hessaire MC18M cooling fans are the most versatile portable evaporative cooling fans on the market, delivering 1,300 CFM of cool airflow covering up to 500 sq ft of open space. The MC18M cooling fan has a 4.8-gallon water tank creating up to 3-4 hours of use. The built-in float valve and garden hose adapter allows for easy connection and contiguous water flow without overflowing your tank. This unit has a motor speed dial with 5 settings: 2 fan modes on HI and LOW speed (pump on), 2 fan-only modes HI and LOW speed (pump off). The high efficiency 0.7A motor allows it to operate on vehicles with 115V power supply making it good for tailgating, camping, pool parties and other outdoor events. Assembly is required. Key Operational Points: Your cooling fan must be positioned in front of an open window or door to operate effectively. Always ensure that there is another open window or door through which the air can exhaust from within the room. At the end of each day, run your cooler on FAN ONLY for 30 minutes to dry out the filter. Prior to putting your cooler away for winter, always: a. Drain the tank and wipe out clean. b. Clean the filter c. Reassemble and run-on FAN ONLY for 30 minutes to dry out the filter. Features EVAPORATIVE COOLING: HESSAIRE?s evaporative cooling fans are designed to pull hot, dry air through a water-soaked filter using a fan to decrease the ambient temperature. It DOES NOT use refrigerants to remove heat like an air conditioner INCREASE HUMIDITY IN DRY CLIMATES: The MC18M evaporative cooling fan is optimal when used in hot, dry climates to filter ambient air while increasing the condensation and delivering 1,300 CFM of cool airflow. Not effective in high humidity areas ENERGY EFFICENT ECO FRIENDLY: Evaporative cooling fans save up to 50% on electricity compared to refrigerated air conditioning systems. Using water instead of refrigerant prevents any release of ozone depleting chemicals into the air MANUAL CONTINUOUS WATER FILL: Hessaire?s MC18M has a 4.8-gallon water tank creating up to 3-4 hours of use. The built-in float valve and garden hose adapter allow for easy connection and continuous water flow without overflowing your tank EASY TO OPERATE SIMPLE TO MAINTAIN: Fill tank, connect power, place unit in a well-ventilated area, flip the switch, and you're all set. Before storing, run for 30 minutes on fan to dry the filter USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.